\( \mathrm{P} \) (Yellow ppt) \( \mathrm{T} \stackrel{\mathrm{K}_{2...

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\( \mathrm{P} \)
(Yellow ppt) \( \mathrm{T} \stackrel{\mathrm{K}_{2} \mathrm{CrO}_{4}}{\longleftarrow} \mathrm{X} \stackrel{\text { dil. } \mathrm{HCl}}{\longrightarrow} \mathrm{Y} \) (Yellow ppt) \( +\mathrm{Z} \uparrow \) (pungent smelling gas) If \( \mathrm{X} \) gives green flame
W test. Then, \( \mathrm{X} \) is :
(A) \( \mathrm{MgSO}_{4} \)
(B) \( \mathrm{BaS}_{2} \mathrm{O}_{3} \)
(C) \( \mathrm{CuSO}_{4} \)
(D) \( \mathrm{PbS}_{2} \mathrm{O}_{3} \)
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